<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>文本修饰</title>
    <style>
        div {
            font-size: 40px;
        }

        .atguigu1 {
            text-decoration: overline dotted green;
        }

        .atguigu2 {
            text-decoration: underline wavy red;
        }

        .atguigu3 {
            text-decoration: line-through;
        }

        .atguigu4 {
            font-size: 40px;
            text-decoration: none;
        }
    </style>
</head>

<body>
    <div class="atguigu1">尚硅谷1</div>
    <div class="atguigu2">尚硅谷2</div>
    <div class="atguigu3">尚硅谷3</div>
    <a class="atguigu4" href="http://www.baidu.com">尚硅谷4</a>
    <ins class="atguigu4">测试1</ins>
    <del class="atguigu4">测试2</del>
</body>

</html>